add logging

config/packages/prod/deprecations.yaml

@@ -0,0 +1,8 @@
+# As of Symfony 5.1, deprecations are logged in the dedicated "deprecation" channel when it exists
+#monolog:
+#    channels: [deprecation]
+#    handlers:
+#        deprecation:
+#            type: stream
+#            channels: [deprecation]
+#            path: php://stderr

config/packages/prod/monolog.yaml

@@ -0,0 +1,17 @@
+monolog:
+    handlers:
+        main:
+            type: fingers_crossed
+            action_level: error
+            handler: nested
+            excluded_http_codes: [404, 405]
+            buffer_size: 50 # How many messages should be saved? Prevent memory leaks
+        nested:
+            type: stream
+            path: php://stderr
+            level: debug
+            formatter: monolog.formatter.json
+        console:
+            type: console
+            process_psr_3_messages: false
+            channels: ["!event", "!doctrine"]